Hoping that their ace will miss just two starts, the Texas Rangers placed right-hander Yu Darvish on the 15-day disabled list Wednesday due to right elbow inflammation.

The move was made retroactive to Sunday, the day after Darvish's most recent start. Darvish will undergo an MRI exam Thursday.

General manager Jon Daniels said that Darvish is dealing with pronator tendinitis.

"The (ulnar collateral ligament) was our first question, but Dr. (Keith) Meister didn't feel that was involved," Daniels told the media, referring to the team physician. "Yu said, if we were maybe in a different spot playing a meaningful game, he might be able to pitch. But we all agreed that with the year we've had with injuries, we're not going to push anything."

Darvish reportedly felt elbow discomfort while playing catch Monday, and he abandoned plans for a bullpen session Tuesday. He wasn't troubled by his arm during a four-inning outing Sunday during a loss to the Houston Astros.

Darvish, 27, is 10-7 with a 3.06 ERA in 22 starts this year.

To replace Darvish on the roster, the Rangers called up left-handed Alex Claudio from Triple-A Round Rock, and he will pitch out of the bullpen. While appearing for three teams in the Texas farm system this year, Claudio went 6-3 with five saves and a 1.66 ERA in 27 games (nine starts). The 22-year-old has no major league experience.

Left-hander Robbie Ross will be called up from Round Rock on Thursday to start against the Tampa Bay Rays. Ross went 2-4 with a 5.61 ERA in 18 games (nine starts) for Texas earlier this season.

MACHADO TO DL

The Baltimore Orioles placed third baseman Manny Machado on the 15-day disabled list Wednesday due to a right knee sprain.

The move is retroactive to Aug. 12.

Machado, who underwent surgery on his left knee after suffering a torn medial patellofemoral ligament in the final days of the 2013 season, had his right knee collapse under him on a swing as he hit a broken-bat grounder in the third inning of Monday’s 11-3 victory over the New York Yankees.

Machado was helped off the field by manager Buck Showalter. Machado had an MRI on the knee the following day, which confirmed the sprain.

Machado, 22, has batted .278 with 12 home runs and 32 RBIs in 82 games for the Orioles this season.

YANKEES ACTIVATE PINEDA

New York Yankees right-handed pitcher Michael Pineda was officially reinstated from the 60-day disabled list for Wednesday night’s start against the Baltimore Orioles.

Pineda was on DL due to shoulder inflammation.

He is 2-2 and with a 1.83 ERA over 19 2/3 innings this season

The Yankees also designated right-handed pitcher Chris Leroux for assignment.

Meanwhile, right-handed pitcher Masahiro Tanaka was able to throw Wednesday with no pain, according to the Wall Street Journal.

Tanaka threw 10 pitches from flat ground, and did not have any issues with his elbow.

METS KEEP COLLINS

The New York Mets are expected to retain Terry Collins as manager next season, according to CBS Sports.

The 65-year-old is under contract for 2015, which would be his fifth season with the Mets, and is likely to return as long as the team avoids a collapse in the final month of the season.

The Mets went into Wednesday’s game with a 57-63 record this season, boosted by an 11-10 mark in the past 21 games. Collins has compiled a 282-324 mark during his time in New York.

The Mets have shown steady improvement over the past two years. They finished 74-88 in 2013 and are on track to surpass that win total this season.

Collins previously served as manager of the Houston Astros (224-197 record, three years) and the Angels (220-237, three years).